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tape: use LP 12h TapeAlert Response to query tape alert flags

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This commit is contained in:
Dietmar Maurer 2021-01-04 13:14:02 +01:00
parent 165b641c1d
commit 5c012b392a
1 changed files with 74 additions and 71 deletions
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145
src/tape/drive/tape_alert_flags.rs
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@ -17,56 +17,61 @@ bitflags::bitflags!{
/// ///
/// See LTO SCSI Reference LOG_SENSE - LP 2Eh: TapeAlerts /// See LTO SCSI Reference LOG_SENSE - LP 2Eh: TapeAlerts
pub struct TapeAlertFlags: u64 { pub struct TapeAlertFlags: u64 {
const READ_WARNING = 0x0001; const READ_WARNING = 1 << 0x0001;
const WRITE_WARNING = 0002; const WRITE_WARNING = 1 << 0002;
const HARD_ERROR = 0x0003; const HARD_ERROR = 1 << 0x0003;
const MEDIA = 0x0004; const MEDIA = 1 << 0x0004;
const READ_FAILURE = 0x0005; const READ_FAILURE = 1 << 0x0005;
const WRITE_FAILURE = 0x0006; const WRITE_FAILURE = 1 << 0x0006;
const MEDIA_LIFE = 0x0007; const MEDIA_LIFE = 1 << 0x0007;
const NOT_DATA_GRADE = 0x0008; const NOT_DATA_GRADE = 1 << 0x0008;
const WRITE_PROTECT = 0x0009; const WRITE_PROTECT = 1 << 0x0009;
const NO_REMOVAL = 0x000A; const NO_REMOVAL = 1 << 0x000A;
const CLEANING_MEDIA = 0x000B; const CLEANING_MEDIA = 1 << 0x000B;
const UNSUPPORTED_FORMAT = 0x000C; const UNSUPPORTED_FORMAT = 1 << 0x000C;
const UNRECOVERABLE_SNAPPED_TAPE = 0x000E; const RECOVERABLE_MECHANICAL_CARTRIDGE_FAILURE = 1 << 0x000D; // LTO5
const MEMORY_CHIP_IN_CARTRIDGE_FAILURE = 0x000F; const UNRECOVERABLE_SNAPPED_TAPE = 1 << 0x000E;
const FORCED_EJECT = 0x0010; const MEMORY_CHIP_IN_CARTRIDGE_FAILURE = 1 << 0x000F;
const READ_ONLY_FORMAT = 0x0011; const FORCED_EJECT = 1 << 0x0010;
const TAPE_DIRECTORY_CORRUPTED = 0x0012; const READ_ONLY_FORMAT = 1 << 0x0011;
const NEARING_MEDIA_LIFE = 0x0013; const TAPE_DIRECTORY_CORRUPTED = 1 << 0x0012;
const CLEAN_NOW = 0x0014; const NEARING_MEDIA_LIFE = 1 << 0x0013;
const CLEAN_PERIODIC = 0x0015; const CLEAN_NOW = 1 << 0x0014;
const EXPIRED_CLEANING_MEDIA = 0x0016; const CLEAN_PERIODIC = 1 << 0x0015;
const INVALID_CLEANING_TAPE = 0x0017; const EXPIRED_CLEANING_MEDIA = 1 << 0x0016;
const HOST_CHANNEL_FAILURE = 0x0019; const INVALID_CLEANING_TAPE = 1 << 0x0017;
const COOLING_FAN_FAILURE = 0x001A; const RETENSION_REQUEST = 1 << 0x0018; // LTO5
const POWER_SUPPLY_FAILURE = 0x001B; const HOST_CHANNEL_FAILURE = 1 << 0x0019;
const HARDWARE_A = 0x001E; const COOLING_FAN_FAILURE = 1 << 0x001A;
const HARDWARE_B = 0x001F; const POWER_SUPPLY_FAILURE = 1 << 0x001B;
const INTERFACE = 0x0020; const POWER_CONSUMPTION = 1 << 0x001C; // LTO5
const EJECT_MEDIA = 0x0021; const DRIVE_MANTAINANCE = 1 << 0x001D; // LTO5
const DOWNLOAD_FAULT = 0x0022; const HARDWARE_A = 1 << 0x001E;
const DRIVE_TEMPERATURE = 0x0024; const HARDWARE_B = 1 << 0x001F;
const DRIVE_VOLTAGE = 0x0025; const INTERFACE = 1 << 0x0020;
const PREDICTIVE_FAILURE = 0x0026; const EJECT_MEDIA = 1 << 0x0021;
const DIAGNOSTICS_REQUIRED = 0x0027; const DOWNLOAD_FAULT = 1 << 0x0022;
const LOADER_STRAY_TAPE = 0x0029; const DRIVE_HUMIDITY = 1 << 0x0023; // LTO5
const LOADER_HARDWARE = 0x002A; const DRIVE_TEMPERATURE = 1 << 0x0024;
const LOADER_MAGAZINE = 0x002D; const DRIVE_VOLTAGE = 1 << 0x0025;
const DIMINISHED_NATIVE_CAPACITY = 0x0031; const PREDICTIVE_FAILURE = 1 << 0x0026;
const LOST_STATISTICS = 0x0032; const DIAGNOSTICS_REQUIRED = 1 << 0x0027;
const TAPE_DIRECTORY_INVALID_AT_UNLOAD = 0x0033; const LOADER_STRAY_TAPE = 1 << 0x0029;
const TAPE_SYSTEM_AREA_WRITE_FAILURE = 0x0034; const LOADER_HARDWARE = 1 << 0x002A;
const TAPE_SYSTEM_AREA_READ_FAILURE = 0x0035; const LOADER_MAGAZINE = 1 << 0x002D;
const NO_START_OF_DATA = 0x0036; const DIMINISHED_NATIVE_CAPACITY = 1 << 0x0031;
const LOADING_FAILURE = 0x0037; const LOST_STATISTICS = 1 << 0x0032;
const UNRECOVERABLE_UNLOAD_FAILURE = 0x0038; const TAPE_DIRECTORY_INVALID_AT_UNLOAD = 1 << 0x0033;
const AUTOMATION_INTERFACE_FAILURE = 0x0039; const TAPE_SYSTEM_AREA_WRITE_FAILURE = 1 << 0x0034;
const FIRMWARE_FAILURE = 0x003A; const TAPE_SYSTEM_AREA_READ_FAILURE = 1 << 0x0035;
const WORM_INTEGRITY_CHECK_FAILED = 0x003B; const NO_START_OF_DATA = 1 << 0x0036;
const WORM_OVERWRITE_ATTEMPTED = 0x003C; const LOADING_FAILURE = 1 << 0x0037;
const ENCRYPTION_POLICY_VIOLATION = 0x003D; const UNRECOVERABLE_UNLOAD_FAILURE = 1 << 0x0038;
const AUTOMATION_INTERFACE_FAILURE = 1 << 0x0039;
const FIRMWARE_FAILURE = 1 << 0x003A;
const WORM_INTEGRITY_CHECK_FAILED = 1 << 0x003B;
const WORM_OVERWRITE_ATTEMPTED = 1 << 0x003C;
const ENCRYPTION_POLICY_VIOLATION = 1 << 0x003D;
} }
} }
@ -78,14 +83,18 @@ pub fn read_tape_alert_flags<F: AsRawFd>(file: &mut F) -> Result<TapeAlertFlags
decode_tape_alert_flags(&data) decode_tape_alert_flags(&data)
} }
fn sg_read_tape_alert_flags<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> { fn sg_read_tape_alert_flags<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error> {
let mut sg_raw = SgRaw::new(file, 512)?; let mut sg_raw = SgRaw::new(file, 512)?;
// Note: We cannjot use LP 2Eh TapeAlerts, because that clears flags on read.
// Instead, we use LP 12h TapeAlert Response. which does not clear the flags.
let mut cmd = Vec::new(); let mut cmd = Vec::new();
cmd.push(0x4D); // LOG SENSE cmd.push(0x4D); // LOG SENSE
cmd.push(0); cmd.push(0);
cmd.push(0x2e); // Tape Alert Flag page cmd.push((1<<6) | 0x12); // Tape Alert Response log page
cmd.push(0); cmd.push(0);
cmd.push(0); cmd.push(0);
cmd.push(0); cmd.push(0);
@ -101,37 +110,31 @@ fn sg_read_tape_alert_flags<F: AsRawFd>(file: &mut F) -> Result<Vec<u8>, Error>
fn decode_tape_alert_flags(data: &[u8]) -> Result<TapeAlertFlags, Error> { fn decode_tape_alert_flags(data: &[u8]) -> Result<TapeAlertFlags, Error> {
proxmox::try_block!({ proxmox::try_block!({
if !(data[0] == 0x2e && data[1] == 0) { if !((data[0] & 0x7f) == 0x12 && data[1] == 0) {
bail!("invalid response"); bail!("invalid response");
} }
let mut reader = &data[2..]; let mut reader = &data[2..];
let page_len: u16 = unsafe { reader.read_be_value()? }; let page_len: u16 = unsafe { reader.read_be_value()? };
if page_len != 0x140 { if page_len != 0x0c {
bail!("invalid page length"); bail!("invalid page length");
} }
let mut value: u64 = 0; let parameter_code: u16 = unsafe { reader.read_be_value()? };
if parameter_code != 0 {
for _ in 1..65 { bail!("invalid parameter code");
let id: u16 = unsafe { reader.read_be_value()? };
if id < 1 || id > 64 {
bail!("invalid parameter id '{}'", id);
}
let bit: u64 = 1 << (id as usize - 1);
let mut data = [0u8;3];
reader.read_exact(&mut data)?;
if data[1] != 1 {
bail!("invalid parameter length");
}
match data[2] {
0 => {},
1 => { value |= bit; }
_ => bail!("invalid flag value"),
}
} }
let mut control_buf = [0u8; 2];
reader.read_exact(&mut control_buf)?;
if control_buf[1] != 8 {
bail!("invalid parameter length");
}
let value: u64 = unsafe { reader.read_le_value()? };
Ok(TapeAlertFlags::from_bits_truncate(value)) Ok(TapeAlertFlags::from_bits_truncate(value))
}).map_err(|err| format_err!("decode tape alert flags failed - {}", err)) }).map_err(|err| format_err!("decode tape alert flags failed - {}", err))
} }